Police violence and homicide have persistently and disproportionately affected black communities for decades. A new study claims black Americans’ share of police killings is significantly higher than previous research suggested.

Across the country, black men are over three times more likely to be killed by police than white men, according to a study published Thursday in the American Journal of Public Health. In an analysis of all male homicides between 2012 and 2018, 8 percent occurred at the hands of police, researchers found.

Of nearly 6,300 reported deaths during the six-year count, almost 1,800 were black, researchers found. Police killings remained highest among black men across the United States, though the risk varies dramatically by region: In some Midwestern cities, rates of black men killed by police are eight times higher. Interestingly, nearly two-thirds of the reported killings were concentrated in suburbs and rural areas, lead author Frank Edwards said.

“It’s not a problem confined to a single region or type of place,” he told Newsweek. “There are places where the risk is much, much higher, but across the country, there’s nowhere the risk [of black men being killed by police] isn’t at least double.”